Concatenate adjacent string tokens more efficiently.
Concatenate adjacent string tokens more efficiently.

String contents were copied multiple times if three or more string
tokens were concatenated. This patch is to do copy only once.

8l/8cc,nobody1986/8cc,rui314/8cc,abc00/8cc,8l/8cc,rui314/8cc,cpjreynolds/8cc,8l/8cc,cpjreynolds/8cc,abc00/8cc,rui314/8cc,andrewchambers/8cc,nobody1986/8cc,nobody1986/8cc,vastin/8cc,andrewchambers/8cc,rui314/8cc,jtramm/8cc,jtramm/8cc,gergo-/8cc,jtramm/8cc,abc00/8cc,vastin/8cc,8l/8cc,jtramm/8cc,vastin/8cc,andrewchambers/8cc,cpjreynolds/8cc,gergo-/8cc,andrewchambers/8cc,nobody1986/8cc,gergo-/8cc,vastin/8cc,abc00/8cc,cpjreynolds/8cc